baber/WOPTO huggingface dataset:
Patent GB-1362121-A (GB)
Title: Accelerometers
IPC: G01P15/13
Filed: 1972-06-07
Abstract: 1362121 Accelerometers FERRANTI Ltd 4 June 1973 [6 June 1972] 26478/72 Heading G1N A force balance accelerometer comprises an arm 20, Fig. 1, attached to a coil 17 which is pivotally mounted in a uniform magnetic field provided by permanent magnet 11. When an acceleration occurs the arm and coil assembly pivots and the arm makes an electric connection with contact 22 or 23 depending on the direction of acceleration; this causes a current to flow through coil 17 in a direction which moves the arm away from the contact to break the circuit. This process is repeated as long as the acceleration continues, and the average value of the current is proportional to the acceleration. The use of two contacts 22, 23 makes the device sensitive to accelerations in the two directions 30, 32, and also allows a cyclic acceleration (such as arises when a constant acceleration occurs but the device is vibrating) to be measured. The sensitivity of the device can be altered by nut 24 which affects the balance of arm 20. For horizontal use the arm may be centred by hair springs, while for vertical use gravity may be relied on or a D.C. current may be passed through the coil. The sensitivity may also be altered by an adjustable air gap 35 in the magnetic circuit, or by using an electromagnet to vary the permanent magnet field. The contacts 22, 23 may be replaced by an optical arrangement such as a light emitting diode and a light detector, arm 20 interrupting the path between them. When contact is made in Fig. 1, one of a pair of transistors may be activated as in Fig. 2 (not shown) to pass a constant current through the coil in an appropriate direction. An alternative arrangement which passes a linearly increasing current through the coil is shown in Fig. 4 (a), where switch 49 is formed by arm 20 and contact 22 of Fig. 1. When switch 49 is open, i.e. no acceleration is occurring, there is no potential at point 46 and consequently transistor switch 40 is closed. This prevents any voltage occurring across capacitor 38. If switch 49 closes, the rise of potential at 46 opens switch 40 and the capacitor charges at constant rate due to current flowing through transistor 39. As the capacitor voltage rises an increasing current is fed to coil 17 by Darlington pair 36 until the switch 49 is opened. This closes switch 40 to short out capacitor 38 and the process then repeats, the mean coil current being measured as mean voltage across resistor 35. Diode 47 compensates temperature changes in the switch 40. A circuit similar to Fig. 4 (a) is also provided for contact 23 of Fig. 1.
Patent GB-859202-A (GB)
Title: Improvements in nuclear reactors and in or relating to nuclear reactor fuel elements
Inventor: HAYNES RONALD
IPC: G21C17/10
Filed: 1956-08-30
Abstract: 859,202. Nuclear fuel elements. BABCOCK & WILCOX Ltd. Aug. 30, 1957 [Aug. 30, 1956], No. 26515/56. Class 39(4). A nuclear fuel element containing fissile and/or fertile material in a can 27 is assembled as a unit with a sleeve 23 of graphite or other material surrounding the can with a space for coolant in between. The can has several pins 29 formed by machining from the solid, with slots into which three radial vanes 33 are inserted and welded. A spider 53 is threaded on to the top of the can 27 for lifting and the can is secured between a ring 51, pinned at 52, and a ledge 43 at the bottom of the sleeve. Conductive rings 63, 83 joined by leads 125 connect a thermocouple 119 to instruments outside the reactor, irrespective of the position of the unit carrying the thermocouple. The wall thickness of the sleeves increases from bottom to top of each unit and from unit to unit up each channel, to increase flow velocity of coolant at the top and hence the rate of cooling. Similarly the sleeve wall thickness is greater at the periphery of the core where less cooling is required. The sleeves may be of beryllium-in sections with tie bars. They may be slotted or recessed to reduce material. The radial vanes may be of graphite.
Patent GB-1357543-A (GB)
Title: Lock actuators for vehicle wheel brakes
IPC: F16D65/22
Filed: 1970-06-02
Abstract: 1357543 Brake lock actuators GIRLING Ltd 28 May 1971 [2 June 1970] 26531/70 Heading F2F A lock actuator for a vehicle hydraulically operated drum brake comprises an extensible strut formed by a shaft part 14 and a ring part 11 connected by reversible screw thread, a friction clutch formed by the outer face 19 of the head 18 of shaft 14 and the inner face of a tappet 7 and which when engaged locks the strut against contraction and a piston 21 and chamber 22 for operating the clutch, there being a working clearance between the clutch faces which is at a maximum when the strut is under tensile loading and which clearance is taken up only when the clutch is engaged and the strut is under compressive loading. When the driver wishes to park the vehicle he operates a valve to apply pressure to a chamber 4 and apply the brakes and release pressure in chamber 22 so that the piston 21 is retracted by a spring 21A. Pressure in chamber 4 is then relaxed, tappets 7, 8 are pressed together by shoe return springs causing the clearance between tappet 7 and clutch face 19 to be taken up and the strut locked. Release is by pressurizing chamber 22 to release the clutch.
Patent GB-352803-A (GB)
Title: Improvements in or relating to mixing machines for plasticating phenol compounds and such like
IPC: B29B7/82
Filed: 1930-09-09
Abstract: 352,803. Mixing-machines. DUCHARME, D. A., Akron, Ohio, and BANBURY, F. H., Ansonia, Connecticut, both in U.S.A. Sept. 9, 1930, No. 26867. Convention date, May 31. [Class 86.] To enable rubber mixing machines of the kind comprising a pair of rotors mounted on parallel shafts in a trough to mix sticky compounds, means are provided for cooling the feeding passage down which the material is forced by a piston-like weight. In the form shown, the feeding passage is fitted with a liner K<1> formed with a jacket O to which cooling water can be circulated through pipes T, U. The liner is fixed in position by set-screws S passing through projections R, and the jacket is spaced from the wall of the passage to provide an insulating air gap V. In a modification, the liner is formed with a spiral passage in its wall through which the cooling medium can be circulated.
Patent GB-952268-A (GB)
Title: Improvements in or relating to electric driving wheels
IPC: B60K7/00
Filed: 1962-07-12
Abstract: 952,268. Change-speed gear. AUTOMOBILES M. BERLIET. July 12, 1962 [July 17, 1961], No. 26919/62. Heading F2D. [Also in Division B7] In an electric motor wheel the motor shaft 5 drives the rim 14 of the wheel through a variable speed gear-box 4 and three parallel trains of fixed ratio reduction gears 8, 9, 10. The gear-box 4 houses an epicyclic gear train comprising a sun gear 20 on the motor shaft 5, planet pinions 22 on a carrier 23 connected to an output shaft 6, and a ring gear 24 bolted to a hub 25. Lined clutch discs 29, 42 and 34, 35 engaging the hub 25 and a pinion 36 on the motor shaft 5 are normally engaged by means of springs 47, 48 acting through a thrust bearing 46 to lock the epicyclic gear and provide direct drive to the output shaft 6. To provide a reduced starting ratio pressure fluid is supplied to a deformable chamber 50 sealed by a diaphragm 65 to disengage the clutch discs 29, 42 and 34, 35 by means of bolts 44, 45 and simultaneously to hold the ring gear 24 stationary by engaging a brake disc 28 connected to the hub 25 with lined plates 30, 31 secured to the gear easing. The output shaft 6 of the gear-box 4 is formed with teeth 7 meshing with the gear 8 of each reduction train, and the final pinion 10 of each train meshes with a common ring gear 11 secured to the wheel rim 14. In another embodiment an electromagnet effects low-ratio engagement. In a further embodiment the clutch and brake controlling the epicyclic gear train are disposed at the other end of the motor and are coupled with the gear ring 24 by a shaft extending through the motor shaft 5.
Patent GB-1049218-A (GB)
Title: New 1-methyl-í¸-5ª-androsten-17ª-ol-3-one-17-esters and a process for their manufacture
IPC: C07J1/00
Filed: 1965-06-25
Abstract: The invention comprises compounds of the general formula <FORM:1049218/C2/1> in which R1 represents a halogen atom, especially chlorine and R2 and R3 represent hydrogen or halogen atoms, especially chlorine, and n = 0 or 1 and a process for the preparation thereof wherein the free 17-alcohol is esterified with the halogen fatty acid, or reactive derivative thereof, required to produce the desired ester.
Patent GB-206169-A (GB)
Title: Improvements in or relating to jars for use in rotary well drilling apparatus
IPC: E21B31/107
Filed: 1923-10-30
Abstract: 206,169. Kammerdiner, J. A. Oct. 30, 1922, [Convention date]. Bore-hole apparatus.-A jar for use in hydraulic rotary well-drilling comprises a. cylindrical shell 20 threaded to a lower head 15 and to. an upper head 7, the latter being connected at 6 to the upper part of the string of boring tubes; slidable through the lower head is a tubular T-member 21, the head 22 of which may be received in transverse pockets 12, 18 of the upper and lower heads 7, 15. The kwer faces of the head 22 of the T-member and the upper faces of the head 15 are correspondingly inclined. A conduit 23 is threaded to the T-member and slidably passes through the upper head 7. Grease is placed in the shell 20. In drilling, the head 22 of the T-member is engaged with the pocket 12 of the upper head 7 and the string is rotated. If the drill sticks, the upper part of the string is raised and turned until the head 22 engages the upper faces of the head 15 on which posts 19 are provided to limit the relative turning movement. An upward strain is then applied and the upper part of the string is rotated so as to cause the head 22 suddenly to engage the pocket 18 of the lower head and impart a jarring action.
Patent GB-154425-A (GB)
Title: Improvements in devices for use in repairing slated roofs
IPC: E04G23/02
Filed: 1919-11-06
Abstract: 154,425. Mairs, W. Nov. 6, 1919. Roofs, slating. - A method of repairing slated roofs consists in (1) placing the new slate in position, (2) drilling one or more holes a<1>, b' in the new and adjacent slates, (3) inserting from the top the flat head of a bolt d, (4) placing on the bolt and in the hole a', b<1> a circular washer which exactly fills the hole and keeps the shank of the bolt central, (5) placing on the bolt a flat washer b and nut a or strip of metal d<1>, e<1>.
Patent GB-792817-A (GB)
Title: Improvements in or relating to saws
IPC: B23D49/11
Filed: 1955-09-26
Abstract: 792,817. Saws. EATON, W. A., and DONOGHUE, J. Aug. 20, 1956 [Sept. 26, 1955], No. 27313/55. Class 61. A tenon saw is provided with a depth gauge comprising a bar d which is adjustably attached to the blade b by bolts g which pass through spaced parallel slots c in the blade and are secured by wing nuts j (not shown). The bar d is of angle cross section and is provided with lugs which are drilled to receive the bolts and have ears f which co-operate with flats on the bolt heads to prevent relative turning of the bolts. A stop bar may be provided on each side of the blade. A scale may be provided adjacent one or both slots.
Patent GB-687028-A (GB)
Title: Improvements in or relating to wheel driving arrangements for two-wheeled walk-type tractors
IPC: F16H48/30
Filed: 1950-11-08
Abstract: 687,028. Motor vehicle driving arrangements. GUYER, J. BUCHER-. Nov. 8, 1950 [Dec. 3, 1949], No. 27330/50. Class 79 (ii) In a two wheel walk-type tractor having each wheel mounted on a stub axle, the stub axles are driven through a single or two part lay shaft parallel therewith and connected with a differential gear, each stub axle being driven by the lay shaft through a driving pinion slidably mounted on the shaft, the pinions being coupled with either the sun and planet gears or the driving wheel of the differential gear by axial movement to the right or left of a neutral position and one or other drive being effected by the pinions engaging driving members rigid with the lay shaft, so that each wheel can be separately coupled with or uncoupled from the driving wheel of the differential gear. In the embodiment shown in Fig. 1 having a two part lay shaft each driving wheel 5 carries a brake drum 7, the braking means I of the wheels being independently or conjointly controlled. Each wheel 5 is mounted on its stub axle 3 carrying a gear 12 meshing its driving pinion 24 slidably mounted on an output shaft 20 of the differential gear, the shafts 20 constituting the lay shaft and the pinions 24 being independently controlled by rods 31. Each shaft 20 carries a dog-clutch element 25 constituting the driving element and adapted to be engaged, as shown in Fig. 1, with a corresponding element on one end of the pinion 24. The other end of the pinion 24 carries another dog-clutch element adapted to engage with a corresponding element on the differential casing 16. The pinions each have three grooves 26 engageable by a spring-loaded ball 27 corresponding to three positions of the pinions; the first engagement between the pinion and the member 25 enabling a different drive of the wheels, the second the neutral position corresponding to the wheels not being driven, and the third engagement between the pinion and the casing 16 enabling a non-differential drive of the wheels through the driving wheel 15 rigid with the casing 16 and an engine-driven worm 14. In another embodiment, Fig. 3, having a single part lay shaft the differential casing 16 is connected by an element 17a with the lay shaft 20b and the slideable pinions 24 are each adapted to form a dog-clutch engagement with a differential sun gear 19 for the drive through the differential or with the member 25 rigid with the shaft 20 for the non-differential drive.
Patent GB-1261534-A (GB)
Title: Improvements in or relating to sweep frequency oscillators
Inventor: SKINGLE COLIN WILLIAM
IPC: H03B23/00
Filed: 1968-06-10
Abstract: 1,261,534. Square-low sweep-frequency oscillator. AVIATION SUPPLY MINISTER OF. Sept. 5, 1969 [June 10, 1968], No.27399/68. Heading G1U. [Also in Division G4] The rate of change of frequency in a sweptfrequency oscillator (for spectrum-analysis apparatus) is proportional to the square of the instantaneous frequency. The oscillation 3 is controlled by a voltage e such that e = K 2 f. The output is fed to a monostable circuit 4 which generates a pulse of constant width t 1  and having a repetition frequency equal to f. The pulses are applied to a gate 5, to which is also applied the voltage e. The output of the gate is therefore proportional to ft 1 e and this output is applied to an integrator 1 and amplifier 2 in tandem. The output of the amplifier is e, so that: -  ft 1 e =K 1 de/dt where K 1  is a function of the gain of the amplifier 2 and the time-constant of the integrator 1. Since e =K 2 f, we have: f<SP>2</SP>t 1 /K 1  = df/dt, which is the required result: In a modification, the voltage e is applied to the circuit 4 instead of the gate 6 and the pulses fed to the gate have a width proportional to e. The same result as before is obtained.
Patent GB-170844-A (GB)
Title: An improved stand for electric irons
IPC: D06F79/02
Filed: 1921-10-18
Abstract: 170,844. Hodgson, W. Oct. 29, 1920, [Convention date]. Stands for hand-irons.-Consists in the combination with a switch on the stand controlling the circuit of an electric iron with which it is to be used of a hinged spring-controlled plate supporting the iron, which closes the switch when in the normal horizontal position, and opens it when depressed by the weight of the iron against the action of the spring. The plate M is hinged to a box-shaped frame A, having a top B carrying the switch C, which is formed by an arm D, pivoted at one end to a standard upon an insulating base E and adapted to bridge a pair of terminals F interposed in one of the line wires of the iron circuit, these wires being connected to the socket holes of a contact block G on one end of the box and passing through a hole H at the other end to the iron. A link N passing through an aperture in the box-top and switch base E connects the plate M to the arm D, and the plate is kept raised when the iron is in use by springs O surrounding the hinge pin, being limited in downward movement by contact of knobs m on the under surface with the top B of the frame.
Patent GB-833188-A (GB)
Title: Light amplifier and storage device
Filed: 1958-08-28
Abstract: 833,188. Electroluminescence. SYLVANIA ELECTRIC PRODUCTS Inc. Aug. 28, 1958 [Sept. 5, 1957], No. 27698/58. Drawings to Specification. Class 39(1). A method of making a device for the storage, amplification or conversion of radiant energy comprises the steps of forming on a transparent surface, in the following order, a transparent conductive film, an electroluminescent layer, a layer of relatively opaque material capable of transmitting between 1% and 20% of the light from the electroluminescent layer, a plurality of superimposed photoconductive layers the total thickness of which is two to three times that of the electroluminescent layer, and an electrode applied to the outer surface of the total photoconductive layer. In a preferred method, a transparent, conducting film, two to three thousandths of an inch thick, is formed on a heated glass plate by spraying it with a tin chloride solution, the film then being covered by an electroluminescent layer 0À004-0À005 inches thick comprising copper and lead activated zinc sulphide embedded in a dielectric such as a ceramic or glass. This in turn is covered by an opaque layer 1-2 thousandths of an inch thick of a black frit in a vehicle such as xylol or carbon black in a suitable dielectric and having a light transmission between 5 and 20%. The photoconductive layer is then formed by spraying four or five successive layers of a mixture comprising 1000 cadmium sulphide to 50 cadmium chloride to 1 copper chloride in an ethyl cellulose with xylol, the unit being fired in air at 525‹-550‹C. for 15-25 minutes after each layer is applied, thus forming a total photoconductive layer 0À008-0À012 inches thick of densely sintered particles. The electrode may be a nickel screen attached to the photoconductive layer by a transparent wax or a further transparent conductive coating applied to a second glass plate. Specifications 731,364 and 773,997 are referred to.
Patent GB-262076-A (GB)
Title: Improvements in or relating to modulation systems applicable to wireless signalling
IPC: H03C1/54
Filed: 1926-11-05
Abstract: 262,076. Marconi's Wireless Telegraph Co., Ltd., (Assignees of Hansell, C. W.). Nov. 28, 1925, [Convention date]. Thermionic modulating systems.-A modulating system, designed to prevent the distortion which ordinarily accompanies modulation of high percentage, comprises a push-pull combination in which the valves are given unequal grid bias, and the arrangement may be such as to neutralize certain harmonics of the carrier frequency. Thus in a push-pull system of the usual type, two grid bias batteries may be connected in opposite senses to the two grids : or unequal biases may be tapped off two potentiometers, the high frequency oscillations being applied to the grids through coupling condensers. In the arrangement shown in Fig. 3 two pairs of valves 42, 43 and 45, 46, are used, with the view of eliminating even harmonics of the carrier. The grid 42<1> in one pair and the grid 45<1> in the other are connected to a tapping on one potentiometer resistance 37, the circuit of which extends from earth at 36 through the battery 35, resistance 37, and conductor 57 to earth at 53. The other two grids 43<1>, 46<1> are similarly connected to a tapping on the potentiometer 38, and the tappings are so adjusted that the grids of a pair differ in bias. The modulating current is supplied through a split primary 29, 30, to differentially wound secondaries 31 - - 34, and high frequency oscillations are supplied to the grids from an oscillator 41 through a transformer 48 and blocking condensers 44, 47. The output coils 56, are differentially connected to eliminate even carrier harmonics. By employing a larger number of pairs of valves other series of harmonics can be eliminated. The output may be overmodulated without distortion provided that at the receiving station the carrier be amplified to a greater extent than the side bands.
Patent GB-1535711-A (GB)
Title: Continuous production of phosphine
IPC: C01B25/06
Filed: 1977-07-04
Abstract: 1535711 Phosphine HOECHST AG 4 July 1977 [17 July 1976] 27882/77 Heading C1A In a process for the continuous production of phosphine by reacting yellow phosphorus with an aqueous alkali metal hydroxide solution in the presence of an alcohol, with the exclusion of oxygen, at 44 to 90 C., the phosphorus and alkali metal hydroxide solution being introduced separately from one another, the reaction is effected in two separate reaction stages, wherein, in the first reaction stage, the alkali metal hydroxide solution and phosphorus are continuously reacted with agitation in a molar ratio of 0.7:1 to 0.9:1, the resulting continuously produced gaseous phosphine is collected, and the resulting liquid phase material containing unreacted phosphorus is concurrently delivered to the second reaction stage; and, in the second reaction stage, the said unreacted phosphorus is reacted with further aqueous alkali metal hydroxide solution and the resulting gaseous reaction products are collected separately from the gaseous phosphine collected in the first reaction stage.
Patent GB-221687-A (GB)
Title: A new or improved composition for facing surfaces, walls, and the like, and method of manufacturing same
IPC: C04B24/14
Filed: 1923-11-06
Abstract: 221,687. Orlovsky, W. Nov. 6, 1923. Concretes and mortars.-Compositions for facing walls and other surfaces consist of the following ingredients, preferably in the proportion stated, viz. :-5 parts by volume of sand, 1 part of cement, 1.5 parts of slaked lime. 0.5 parts of pulverized brick, and 0.003 parts of albuminous or proteinous matter, which may be added in the form of a sufficient quantity of sawdust or similar albumen-or protein-containing substance.
Patent GB-919264-A (GB)
Title: Improvements relating to shaft linings
IPC: E21D5/11
Filed: 1959-08-14
Abstract: 919,264. Shaft linings. GUTEHOFFNUNGSHUTTE STERKRADE A.G. Aug. 14, 1959 [Aug. 14, 1958], No. 27907/59. Addition to 906,974. Class 85. The Specification describes stirrup-shaped anchors 4 which have strengthening plates 6 as in the parent Specification, but in the present case the stirrups are arranged vertically in staggered rows on the outer surface of the inner sheet steel lining of a mine shaft. Members 11 are provided to tie the inner and outer steel cylinders together and additional anchors 8 are also provided.